CN106462035A - Lens barrel - Google Patents

Lens barrel Download PDF

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Publication number
CN106462035A
CN106462035A CN201580030631.0A CN201580030631A CN106462035A CN 106462035 A CN106462035 A CN 106462035A CN 201580030631 A CN201580030631 A CN 201580030631A CN 106462035 A CN106462035 A CN 106462035A
Authority
CN
China
Prior art keywords
movable cylinder
cylinder portion
lens
lens barrel
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201580030631.0A
Other languages
Chinese (zh)
Other versions
CN106462035B (en
Inventor
八木启文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kowa Co Ltd
Original Assignee
Kowa Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kowa Co Ltd filed Critical Kowa Co Ltd
Priority to CN201910480841.XA priority Critical patent/CN110109227A/en
Publication of CN106462035A publication Critical patent/CN106462035A/en
Application granted granted Critical
Publication of CN106462035B publication Critical patent/CN106462035B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation

Abstract

[Problem] To make it possible to prevent vibrations or the like from causing focus or zoom slippage or the like in a lens that is mounted to a camera body that is used in a fixed location outdoors for many years for security purposes or is used inside a building that is subject to a variety of vibrations, such as a camera that is used for quality-checking purposes or the like at a production site in a factory. [Solution] The lens barrel (1) in this invention has the following: a fixed tube section (10) that is mounted to a camera body (B); a movable tube section (20) that is movably screwed to the fixed tube section (10); and a nut member (12) that, screwed to the movable tube section (20), is biased towards the tip (10b) of the fixed tube section (10). The nut member (12) acts as a double nut, making it possible to inhibit rotation of the fixed tube section (10) and the movable tube section (20) relative to each other, preventing focus or zoom slippage or the like.

Description

Lens barrel
Technical field
The present invention relates to being configured to the lens barrel with respect to the assembly and disassembly of camera body.
Background technology
In the past, in order to the robot checking line and/or manufacture in factory position detection or in order to safety etc. other Various uses, in the interior of building and/or outdoor setting camera, have in such camera is configured to assembly and disassembly lens Lens barrel, proposes various constructions (referring for example to non-patent literature 1, patent document 1 and 2) for this lens barrel.
Fig. 5 is the side-looking of of the conventional construction illustrating to be configured to the lens barrel with respect to the assembly and disassembly of camera body Figure, the symbol B of in figure represents camera body, and symbol 100 represents the lens barrel being detachably installed in this camera body B. This lens barrel 100 is made up of multiple cylindrical portion 101A, 101B, and is configured to relatively revolve by making this cylindrical portion 101A, 101B Then adjustment focus.And, symbol 102 represents pretty good for being fixed the position of rotation making each cylindrical portion 101A, 101B The backing-up screw of position.
Prior art literature
Non-patent literature
Non-patent literature 1：Kowa company Ltd, fine 1 type surpass 6 mega pixels (mega pixel over) camera pair Answer lens, LM16SC outside drawing, [26 years (2014) Mays 29 of Heisei (Thursday) retrieval], network address ＜ URL：http:// www.kowa.co.jp/opto/products/pdf/lm16sc.pdf〉
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2013-84016 publication
Patent document 2：No. 5372385 publication of Japanese Unexamined Patent Publication
Content of the invention
Invention problem to be solved
However, the diameter smaller radial of backing-up screw 102 as described above, so exist to be difficult to tighten this problem.
It is an object of the invention to provide the lens barrel of the problems referred to above can be eliminated.
For solving the technical scheme of problem
Invention involved by technical scheme 1 is the scheme as illustrated in Fig. 1 to Fig. 3 (a) and Fig. 6, is to be configured to The lens barrel (1,2,3) assembled and disassembled with respect to camera body (B) is it is characterised in that possess：
Fixed cylinder portion (10,20,30), their base end side (10a, 20a, 30a) be installed in described camera body (B) and It is formed with threaded portion (hereinafter referred to as " fixed cylinder side screw thread in the inner peripheral surface (10c, 20c, 30c) of tip side (10b, 20b, 30b) Portion ") (10d, 20d, 30d)；
Movable cylinder portion (11,21,31), they are to maintain lens (A1、A2) cylindrical member, outer peripheral face (11a, 21a, 31a) it is formed with threaded portion (hereinafter referred to as " movable cylinder side threaded portion ") (11b, 21b, 31b), and with this movable cylinder side spiral shell Line portion (11b, 21b, 31b) threadingly engages in the state of described fixed cylinder side threaded portion (10d, 20d, 30d) can be to described The state configuration of the medial movement in fixed cylinder portion (10,20,30)；With
Nut member (12,22,32), they are configured to, by threadingly engage in described movable cylinder side threaded portion (11b, 21b, 31b) in the state of be connected to the tip side (10b, 20b, 30b) in described fixed cylinder portion (10,20,30), suppress this to fix Cylinder portion (10,20,30) is rotated against with described movable cylinder portion (11,21,31).
Invention involved by technical scheme 2, in the invention described in technical scheme 1, such as Fig. 2 (a) (b), Fig. 3 (a) and Fig. 6 be shown in detail like that it is characterised in that：Described movable cylinder portion (21,31) has：Have described movable cylinder side threaded portion (21b, Base end side movable cylinder portion (210,310) 31b)；The top in this base end side movable cylinder portion (210,310) can be installed on assembling and disassembling Side movable cylinder portion (211,311)；With to be held in this base end side movable cylinder portion (210,310) and this tip side movable cylinder portion State configuration fixed aperture plate (212,314) between (211,311).
Invention involved by technical scheme 3, in the invention described in technical scheme 2, as illustrated in Fig. 3 (b) to (d), its It is characterised by：Possess have the opening (not shown) in described fixed aperture plate (212) of different sizes opening (212Aa, 212Ba, 212Ca) replacement with fixed aperture plate (212A, 212B, 212C).
Invention involved by technical scheme 4, in the invention described in technical scheme 1 it is characterised in that：In described movable cylinder Holding in portion described lens (A1、A2) part (hereinafter referred to as " lens maintaining part ") (with reference to the symbol 11 of Fig. 1, Fig. 3 (a) Symbol 211,213) it is formed with through hole (with reference to symbol 211c, 213c of symbol 11c, Fig. 3 (a) of Fig. 1)；
It is configured to via this through hole (11c, 211c, 213c) to this lens (A1、A2) outer peripheral face and this lens protect Hold filling bonding agent (not shown) between portion (11,211,213).
Invention involved by technical scheme 5, in the invention described in technical scheme 1, as Fig. 1 and Fig. 2 (a) (b) institute example Show it is characterised in that：Possess concavo-convex as the outer peripheral face being formed at described fixed cylinder portion (with reference to the symbol 20 of Fig. 2 (a) (b)) The fixed cylinder in portion sidewinder flower (with reference to the symbol 20e of this figure) and/or, as being formed at described movable cylinder portion (reference Fig. 1 Symbol 11) the jog of outer peripheral face movable cylinder sidewinder flower (with reference to the symbol 11d of this figure)；
Described nut member (12,22) is to sidewinder flower (20e) and/or described movable cylinder side different from described fixed cylinder Annular knurl (11d) shape and/or color are formed.
Invention involved by technical scheme 6,7, in the invention described in technical scheme 1, as illustrated in fig. 6, its feature exists In：As the lens (A to be kept in described movable cylinder portion (31)1、A2) optical axis direction (C) on to this movable cylinder portion (31) The mode of force is configured at the elastic component between described fixed cylinder portion (30) and this movable cylinder portion (31), possesses spring member (with reference to the symbol 33 of Fig. 6).
In addition, reference in parantheses etc. is for the corresponding key element being conveniently shown in accompanying drawing, therefore, the present invention is not Limited and constraint by the record on accompanying drawing.
The effect of invention
Invention according to involved by technical scheme 1, even if be installed in the room being fixed on building all the year round in this lens barrel Interior and/or outdoor and it is also possible to described solid by described nut member suppression in the case of bearing the camera body of various vibrations Safety barrel portion is rotated against with described movable cylinder portion, be prevented from along with described vibration etc. focus and/or zoom dislocation Deng.In addition, the diameter of described nut member is bigger than the diameter of the backing-up screw illustrated in Fig. 5, so play easily tightening and difficult To loosen this effect.
But, in the case that the aperture being used in lens barrel is iris ring, also to consider due to setting place shape Condition is (from shaking that this arm bears in the case of the movable object such as vibration in factory, manufacture arm that camera is arranged in factory Dynamic), earthquake, with other will because vibration, aperture blades are rubbing against one another, the reason produce dust and become the noise of image Possibility.However, the invention according to involved by technical scheme 2 and 3, iris ring is not used to use fixed aperture plate, institute So that such problem also can be eliminated.
Invention according to involved by technical scheme 4, even if in the case that lens barrel is installed on camera body for a long time, Also it is prevented from misplacing from appropriate location of each lens.
Invention according to involved by technical scheme 5, can clearly differentiate described fixed cylinder side by vision and tactile Annular knurl, described movable cylinder sidewinder flower and described nut member.
Invention according to involved by technical scheme 6,7, even if in described fixed cylinder side threaded portion and described movable cylinder side spiral shell There are between line portion how many loosening (loosening of thrust direction), described fixed cylinder portion and described movable cylinder portion are in described optical axis Relative movement on direction is limited by described spring member, till being tightened by described nut member, is prevented from adjoint The dislocation of the focus of this relative movement etc..
Brief description
Fig. 1 is the exploded perspective view of of the structure illustrating lens barrel involved in the present invention.
Fig. 2 (a) (b) is the sectional view of the other examples of the structure illustrating lens barrel involved in the present invention.
Fig. 3 (a) is the view sub-anatomy of the lens barrel shown in Fig. 2 (a) (b), and Fig. 3 (b)～(c) is to illustrate to replace with admittedly Determine the front view of the example of the shape of aperture plate.
Fig. 4 (a)～(c) is the front view of of the conventional construction illustrating aperture plate.
Fig. 5 is the side view of of the conventional construction illustrating lens barrel.
Fig. 6 is the sectional view of the other examples of the structure illustrating lens barrel involved in the present invention.
Specific embodiment
Hereinafter, according to Fig. 1 to Fig. 4 and Fig. 6, embodiments of the present invention are illustrated.
Lens barrel involved in the present invention is configured to assemble and disassemble with respect to camera body.This lens barrel is in Fig. 1, figure Use symbol 1,2,3 to illustrate in 2 (a) (b), Fig. 3 (a) and Fig. 6, and possess：
Fixed cylinder portion 10,20,30, their base end side (along the meaning of a side of optical axis direction C) 10a, 20a, 30a It is installed in described camera body B, and interior in tip side (along the meaning of the another side of optical axis direction C) 10b, 20b, 30b Side face 10c, 20c, 30c are formed with pitch screw portion (hereinafter referred to as " fixed cylinder side threaded portion ") 10d, 20d, 30d；
Movable cylinder portion 11,21,31, they are to maintain lens A1、A2Cylindrical member, in outer peripheral face 11a, 21a, 31a shape Become to have pitch screw portion (hereinafter referred to as " movable cylinder side threaded portion ") 11b, 21b, 31b, and with this movable cylinder side threaded portion 11b, 21b, 31b can be in described optical axis direction C in the state of threadingly engaging in described fixed cylinder side threaded portion 10d, 20d, 30d On to described fixed cylinder portion 10,20,30 medial movement state configuration；With
Nut member (collar nut) 12,22,32, they are configured to, by threadingly engaging in described movable cylinder side It is connected to tip side 10b, 20b in described fixed cylinder portion 10,20,30,30b thus pressing down in the state of threaded portion 11b, 21b, 31b Make rotating against of this fixed cylinder portion 10,20,30 and described movable cylinder portion 11,21,31.
In addition, described nut member 12,22,32 it is preferable that be difficult to occur timeliness change hard material (preferably Metal) formed.
According to the present invention, even if this lens barrel is being installed in the interior being fixed on building all the year round and/or outdoor and bear In the case of the camera body B of various vibrations it is also possible to by described nut member 12,22,32 suppress described fixed cylinder portion 10, 20th, 30 with the rotating against of described movable cylinder portion 11,21,31, be prevented from the focus along with described vibration etc. and/or zoom Dislocation etc..In addition, the diameter of described nut member 12,22,32 is bigger than the backing-up screw 102 illustrated in Fig. 5, so playing appearance Easily tighten and be difficult to loosening effect.
But, in the case of being fixed on the interior of building and/or the camera of outdoor, also to consider due to earthquake and/ Or along with vibration the reason other, the part within lens barrel is rubbing against one another, produce dust and become the noise of image The reason possibility.However, in the case of lens barrel 1,2,3 involved in the present invention, described nut member 12,22, 32 are contacted with described tip side 10b, 20b in fixed cylinder portion 10,20,30, the entirety of 30b, so its contact area becomes to compare Greatly, even if so the vibration bearing earthquake etc. be not easy to produce dust it is also possible to eliminate as problem.
In this case, in described movable cylinder portion such as Fig. 2 (a) (b), Fig. 3 (a) and Fig. 6, symbol 21,31 is shown in detail, and also may be used To have：There is the base end side movable cylinder portion 210,310 of described movable cylinder side threaded portion 21b, 31b；Can be installed on assembling and disassembling The tip side movable cylinder portion 211,311 in this base end side movable cylinder portion 210,310；With to be held in this base end side movable cylinder portion 210th, the fixed aperture plate 212,314 of the state configuration between 310 and this tip side movable cylinder portion 211,311.For example, also may be used With：Inner peripheral surface in described tip side movable cylinder portion 211,311 or outer peripheral face form pitch screw portion (not shown), and The outer peripheral face in the movable cylinder portion 210,310 of described base end side or inner peripheral surface form pitch screw portion (not shown), by this tip side Movable cylinder portion 211,311 is configured to assemble and disassemble with respect to this base end side movable cylinder portion 210,310.Additionally, it is preferred that being set to：Lens A1、A2It is divided into 2 lens group, lens group A of a side1It is held in described base end side movable cylinder portion 210,310 (shown in figure Example in, be detachably supported on the component 213,313 of the tubular of inside in this base end side movable cylinder portion 210,310), Lens group A of the opposing party2It is held in tip side movable cylinder portion 211,311.Therefore, described fixed aperture plate 212,314 is joined It is placed in this 2 lens group A1、A2Between.Constituted (that is, by lens are divided into 2 lens group A by such1、A2And this 2 Individual lens group A1、A2Between configure described fixed aperture plate 212,314), can suppress focus adjustment when aberration change (that is, by The aberration of the lens system that the impact of focus adjustment causes changes (deterioration)).In addition, this fixed aperture plate 212,314 is preferably set to There is the discoideus aperture of opening (aperture openings).
In the case of iris ring 312 as Fig. 4 (a)～(c) is illustrated it is also contemplated that due to earthquake and/or With the vibration of other reasonses, aperture blades are rubbing against one another, possibility the reason produce dust and become the noise of image.But It is, in the case of using fixed aperture plate 212 as described above, to play the generation that can suppress such dust and/or make an uproar The effect of the generation of sound.
And, described fixed aperture plate 212,314 is preferably configured as, can by by movable for described tip side cylinder portion 211, 311 pull down thus being changed from described base end side movable cylinder portion 210,310.
Further, as illustrated in Fig. 3 (b)～(d), preferably：Possess 1 piece or polylith have of different sizes in described fixation The replacement fixed aperture plate 212Aa of opening 212Aa, 212Ba, 212Ca of opening (not shown) of aperture plate 212,212Ba, 212Ca, is configured to suitably to replace.For example, in the case that the place in setting camera body B is the brighter place such as outdoor, Preferably, the replacement fixed aperture plate 212Aa with minimal openings 212Aa such illustrated in this figure (b) is installed on lens Lens barrel 2；It is preferable that by tool such illustrated in this figure (c) and/or (d) in the case of the place dark for indoor corridor etc. Replacement fixed aperture plate 212Ba, 212Ca of having larger open 212Ba, 212Ca are installed on lens barrel 2.In addition, these are solid Determine the thickness of slab of aperture plate 212,212A, 212B, 212C, from the viewpoint of guaranteeing light-proofness and the intensity of machinery, preferably thicker, Open from optical viewpoint, preferably relatively thin, from the viewpoint of meeting whole needs, the preferably scope of 0.05～0.1mm.
It is preferred, however, being configured to：Holding described lens A in described movable cylinder portion1、A2Part (hereinafter referred to as " thoroughly Mirror maintaining part ") (with reference to the symbol 211,213 of the symbol 11 of Fig. 1, Fig. 3 (a)) be formed with through hole 11c, 211c, 213c, and can Via this through hole 11c, 211c, 213c to this lens A1、A2Outer peripheral face and this lens maintaining part 11,211,213 between fill Bonding agent (not shown).In the case of constituting like that, bonding agent can be made to flow into this lens A1、A2Outer peripheral face and this lens Between maintaining part 11,211,213, even if it is also possible to prevent in the case of lens barrel 2 being installed on for a long time camera body B Each lens A1、A2From rational position dislocation.
Next, illustrating to the method to set up of lens barrel 2 involved in the present invention.
In the setting of this lens barrel 2, described camera machine is fixed in the base end side 20a installing in described fixed cylinder portion 20 Body B.Now it is preferable that being coated with bonding agent between this base end side 20a and this camera body B, thus preventing along with vibration Described fixed cylinder portion 20 loosens.
After this fixed cylinder portion 20 is installed on described camera body B, actual observation arranges camera (i.e., described camera machine Body B and described lens barrel 2) place that arranges, select openings of sizes most suitable fixed aperture plate 212,212A, 212B or Person 212C, makes the fixed aperture plate 212 of this selection, 212A, 212B or 212C enter described base end side movable cylinder portion 210 and institute State between tip side movable cylinder portion 211.Now, preferably：In this base end side movable cylinder portion 210 and this tip side movable cylinder portion 211 The part (for example, pitch screw portion (not shown)) abutting is coated with bonding agent, makes these movable cylinder portions 210,211 will not be because shaking Move grade and loosen.Also, it is preferred that：In this base end side movable cylinder portion 210, described nut member 22 is installed, and can by this base end side Dynamic cylinder portion 210 is installed on described fixed cylinder portion 20.In addition, for the coating preventing loosening bonding agent, can be described in setting Stage before camera body B and/or described lens barrel 2 is carried out, thus it is possible to freely change this camera body B and/or this is saturating The posture of mirror lens barrel 2 makes operating personnel easily be coated with this bonding agent, can efficiently carry out the coating operations of bonding agent.In addition, In the above-described embodiment, with
Described fixed cylinder portion 20 is to the installation of described camera body B
Described fixed aperture plate is to the installation in described movable cylinder portion 21
This movable cylinder portion 21 is to the installation in described fixed cylinder portion 20
Order implement each operation but it is also possible to change each operation enforcement order.
Then, the camera body B being provided with described lens barrel 2 is arranged at predetermined place, makes described movable cylinder portion 21 rotate and carry out focus adjustment, and the moment finishing in this adjustment is fixed by described nut member 22.This focus adjusts, Must carry out in the state of camera body B is arranged at scene, carry out fixation (that is, the dynamic cylinder of focus in bonding agent to be passed through Portion 21 and the suppression rotating against in fixed cylinder portion 20) in the case of, due to setting state and/or the setting appearance of camera body B Gesture, is difficult to coating adhesive sometimes.For example, in that case of this camera body B is hung on courtyard and/or eaves, need Will in the state of this camera body B being hung on this courtyard and/or eaves coating adhesive, operating personnel has to not conform to The posture of reason carries out the coating operations of bonding agent, and bonding agent is also possible to flow into the position outside being intended to or drips.In addition, it is viscous at this Connect before agent is sufficiently hardened, probably (for example, wind-induced can be swung and/or the automobile from nigh road driving due to vibration Vibration) lead to focus misplace.But, according to the present invention, the fixation of focus is carried out by described nut member 22, so Such problem can be eliminated.
It is preferred, however, possessing：
As illustrated in Fig. 2 (a) (b), the jog being formed at the outer peripheral face in described fixed cylinder portion 20 is that fixed cylinder is sidewindered Flower 20e；
And/or,
As illustrated in fig. 1, the jog being formed at the outer peripheral face in described movable cylinder portion 11 is that movable cylinder sidewinders colored 11d,
And, described nut member 12,22 is to sidewinder colored 20e and/or described movable cylinder different from described fixed cylinder Sidewinder colored 11d shape and/or color formed.In such a situation, can be clearly regional with tactile by vision Do not open that described fixed cylinder sidewinders colored 20e, described movable cylinder sidewinders colored 11d and described nut member 12,22, be prevented from maloperation Deng.Particularly, in the case of being formed with different colors, play to explain in product description and show with being also understood that The effect going out.
But, as illustrated in fig. 6, preferably：Configure flexible between described fixed cylinder portion 30 and described movable cylinder portion 31 Component 33, to optical axis direction, (that is, the optical axis direction of described lens barrel 3 is also the lens A that described movable cylinder portion 31 is kept1、 A2Optical axis direction) C exerts a force to this movable cylinder portion 31.In such a situation, though described fixed cylinder side threaded portion 30d with More or less loosen (thrust direction loosen) between described movable cylinder side threaded portion 31b, described fixed cylinder portion 30 with described can The relative movement on described optical axis direction C in dynamic cylinder portion 31, the period till being tightened by described nut member 32 is also subject to institute State spring member 33 to limit, be prevented from the dislocation of focus along with this relative movement etc..Here, as described elasticity structure Part 33 is it is preferable that (in figure 6 for right direction, be also due to described nut member 32 to the direction left from described fixed cylinder portion 30 Tighten and the direction of movement) coiled spring member that described movable cylinder portion 31 is exerted a force (specifically, is compression spiral bullet Spring), but can certainly be the spring member beyond coiled spring member, also it is capable of same using other elastic components Structure.
Symbol description
1：Lens barrel 2：Lens barrel
3：Lens barrel 10：Fixed cylinder portion
10a：The base end side 10b in fixed cylinder portion：The tip side in fixed cylinder portion
10c：The inner peripheral surface 10d in fixed cylinder portion：Fixed cylinder side threaded portion
11：Movable cylinder portion, lens maintaining part 11a：The outer peripheral face in movable cylinder portion
11b：Movable cylinder side threaded portion 11c：Through hole
11d：Movable cylinder sidewinders spends 12：Nut member
20：Fixed cylinder portion 20a：The base end side in fixed cylinder portion
20b：Tip side 20c in fixed cylinder portion：The inner peripheral surface in fixed cylinder portion
20d：Fixed cylinder side threaded portion 20e：Fixed cylinder sidewinders flower
21：Movable cylinder portion 21a：The outer peripheral face in movable cylinder portion
21b：Movable cylinder side threaded portion 22：Nut member
30：Fixed cylinder portion 30a：The base end side in fixed cylinder portion
30b：Tip side 30c in fixed cylinder portion：The inner peripheral surface in fixed cylinder portion
30d：Fixed cylinder side threaded portion 30e：Fixed cylinder sidewinders flower
31：Movable cylinder portion 31a：The outer peripheral face in movable cylinder portion
31b：Movable cylinder side threaded portion 32：Nut member
33：Spring member 210：Base end side movable cylinder portion
211：Tip side movable cylinder portion (lens maintaining part)
211c：Through hole 212：Fixed aperture plate
212A、212B、212C：Replace and use fixed aperture plate
212Aa、212Ba、212Ca：Opening 213：Lens maintaining part
213c：Through hole 310：Base end side movable cylinder portion
311：Tip side movable cylinder portion (lens maintaining part)
314：Fixed aperture plate A1、A2：Lens B：Camera body

Claims (7)

1. a kind of lens barrel, is configured to assemble and disassemble it is characterised in that possessing with respect to camera body：
Fixed cylinder portion, its base end side is installed in described camera body, and the inner peripheral surface in tip side is formed with threaded portion, following This threaded portion is referred to as fixed cylinder side threaded portion；
Movable cylinder portion, it is to maintain the component of the tubular of lens, is formed with threaded portion, is referred to as this threaded portion below in outer peripheral face Movable cylinder side threaded portion, and with energy in the state of being engaged in described fixed cylinder side threaded portion in this movable cylinder side threaded portion The state configuration of enough medial movement to described fixed cylinder portion；With
Nut member, consists of, described solid by being connected in the state of threadingly engaging in described movable cylinder side threaded portion The tip side in safety barrel portion, thus suppress rotating against of this fixed cylinder portion and described movable cylinder portion.
2. lens barrel according to claim 1 it is characterised in that：
Described movable cylinder portion has：There is the base end side movable cylinder portion of described movable cylinder side threaded portion；Can be installed on assembling and disassembling The tip side movable cylinder portion in this base end side movable cylinder portion；With to be held in this base end side movable cylinder portion and the movable cylinder of this tip side The fixed aperture plate of the state configuration between portion.
3. lens barrel according to claim 2 is it is characterised in that possess：
There is the replacement fixed aperture plate of the opening of the opening in described fixed aperture plate of different sizes.
4. lens barrel according to claim 1 it is characterised in that：
In described movable cylinder portion holding described lens be formed in part with through hole, below by this part be referred to as lens keep Portion,
And be configured to, can be via this through hole to filling bonding agent between the outer peripheral face of this lens and this lens maintaining part.
5. lens barrel according to claim 1 it is characterised in that：
Possess：Fixed cylinder as the jog of the outer peripheral face being formed at described fixed cylinder portion sidewinders flower；And/or as shape Described in Cheng Yu, the movable cylinder of the jog of outer peripheral face in movable cylinder portion sidewinders flower,
Described nut member with sidewinder flower different from described fixed cylinder and/or described movable cylinder sidewinder colored shape and/ Or color is formed.
6. lens barrel according to claim 1 is it is characterised in that possess：
It is configured at described solid in the way of this movable cylinder portion being exerted a force on the optical axis direction in the lens that described movable cylinder portion keeps Elastic component between safety barrel portion and this movable cylinder portion.
7. lens barrel according to claim 6 it is characterised in that：
Described elastic component is coiled spring member.
CN201580030631.0A 2014-06-09 2015-04-27 Lens barrel Active CN106462035B (en)

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EP3153921A1 (en) 2017-04-12
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CN106462035B (en) 2019-07-02
EP3153921B1 (en) 2019-06-12
EP3525041A1 (en) 2019-08-14
US20190258075A1 (en) 2019-08-22
JP6646180B2 (en) 2020-02-14
JP2020052437A (en) 2020-04-02
EP3153921A4 (en) 2018-01-03
US10914964B2 (en) 2021-02-09
JP2020016907A (en) 2020-01-30
JP6750135B2 (en) 2020-09-02
CN110109227A (en) 2019-08-09
WO2015190182A1 (en) 2015-12-17
JP6612225B2 (en) 2019-11-27
US20170102554A1 (en) 2017-04-13

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